// Tencent is pleased to support the open source community by making ncnn available.
//
// Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
//
// Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the License at
//
// https://opensource.org/licenses/BSD-3-Clause
//
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.

#ifndef NCNN_PIPELINE_H
#define NCNN_PIPELINE_H

#include "mat.h"
#include "platform.h"

#if NCNN_VULKAN
#include "gpu.h"

#include <vulkan/vulkan.h>
#endif // NCNN_VULKAN

namespace ncnn {

#if NCNN_VULKAN
    class Option;
    class Pipeline
    {
    public:
        Pipeline(const VulkanDevice* vkdev);
        virtual ~Pipeline();

    public:
        void set_optimal_local_size_xyz(int w = 4, int h = 4, int c = 4);
        void set_optimal_local_size_xyz(const Mat& local_size_xyz);
        void set_local_size_xyz(int w, int h, int c);

        int create(const uint32_t* spv_data, size_t spv_data_size, const std::vector<vk_specialization_type>& specializations);

        int create(int shader_type_index, const Option& opt, const std::vector<vk_specialization_type>& specializations);

    public:
        const VulkanDevice* vkdev;

        VkShaderModule shader_module;
        VkDescriptorSetLayout descriptorset_layout;
        VkPipelineLayout pipeline_layout;
        VkPipeline pipeline;
        VkDescriptorUpdateTemplateKHR descriptor_update_template;

        ShaderInfo shader_info;

        uint32_t local_size_x;
        uint32_t local_size_y;
        uint32_t local_size_z;
    };

#if __ANDROID_API__ >= 26
    class VkCompute;
    class ImportAndroidHardwareBufferPipeline : private Pipeline
    {
    public:
        ImportAndroidHardwareBufferPipeline(const VulkanDevice* vkdev);
        ~ImportAndroidHardwareBufferPipeline();

        int create(VkAndroidHardwareBufferImageAllocator* ahb_im_allocator, int type_to, int rotate_from, const Option& opt);
        int create(VkAndroidHardwareBufferImageAllocator* ahb_im_allocator, int type_to, int rotate_from, int target_width, int target_height, const Option& opt);
        void destroy();

        friend class VkCompute;

    protected:
        int create_shader_module(const Option& opt);
        int create_sampler(VkAndroidHardwareBufferImageAllocator* ahb_im_allocator);
        int create_descriptorset_layout();

    public:
        int type_to;
        int rotate_from;
        bool need_resize;

        VkSampler sampler;
    };
#endif // __ANDROID_API__ >= 26
#endif // NCNN_VULKAN

} // namespace ncnn

#endif // NCNN_PIPELINE_H
